Display a scene

Before starting this tutorial:

1. You need an ArcGIS Location Platform or ArcGIS Online account.

2. Your system meets the system requirements.

Option 1: Develop the code

Create a new Xcode project

To get started, use Xcode to create an iOS app and configure it to reference the API.

1. Open Xcode. In the menu bar, click File > New > Project.

   • In the Choose a template for your new project: window, set the following properties:
     • Multiplatform iOS
     • Application App
   • Click Next.
   • In the Choose options for your new project: window, set the following properties:
     • Product Name: <your app name>
     • Organization Identifier: <your organization>
     • Interface: SwiftUI
     • Language: Swift
   • Uncheck all other options.
   • Click Next.
   • Choose a location to store your project. Click Create.

2. In the Project Navigator, click <your app name>App. In the Editor, right click on the struct name, <your app name>App. Select Refactor > Rename… to rename the struct to MainApp. Click the Rename button in the top right to confirm the new name. This will rename the struct and file in all affected areas. This file and struct will be named MainApp for all tutorials here on out.

3. Add a reference to the API using Swift Package Manager.

4. In the MainApp.swift file, some errors may appear after importing ArcGIS. Resolve the errors by distinguishing the Scene protocol from Scene. To do so, add the SwiftUI prefix to Scene.

   MainApp.swift

       var body: some SwiftUI.Scene {
   
           WindowGroup {
               ContentView()
   
           }
       }

Set developer credentials

To allow your app users to access ArcGIS location services ArcGIS Location Services, also referred to as Location Services, are services hosted by Esri that provide geospatial functionality for developing mapping applications. They include the ArcGIS Basemap Styles service, ArcGIS Static Basemap Tiles service, ArcGIS Places service, ArcGIS Geocoding service, ArcGIS Routing service, ArcGIS GeoEnrichment service, and ArcGIS Elevation service. An ArcGIS Location Platform or ArcGIS Online account is required to use the services. Learn more , use the developer credentials that you created in the Set up authentication step to authenticate requests for resources.

Create a scene data model

Create a scene A scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data. Learn more with a standard imagery basemap style. The scene will face the Santa Monica Mountains in California.

1. In Xcode, in the Project Navigator, click ContentView.swift.

2. In the editor, add an import statement to reference the API.

3. Add a @State property wrapper named scene of type Scene with a default value. Create a scene with an arcGISImageryStandard basemap style and return it.

   ContentView.swift

   15 collapsed lines
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   // Copyright 2023 Esri
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   //
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   // Licensed under the Apache License, Version 2.0 (the "License");
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   // you may not use this file except in compliance with the License.
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   // You may obtain a copy of the License at
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   //
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   //   https://www.apache.org/licenses/LICENSE-2.0
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   //
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   // Unless required by applicable law or agreed to in writing, software
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   // distributed under the License is distributed on an "AS IS" BASIS,
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   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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   // See the License for the specific language governing permissions and
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   // limitations under the License.
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   import SwiftUI
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   import ArcGIS
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   struct ContentView: View {
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       @State private var scene: ArcGIS.Scene = {
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           let scene = Scene(basemapStyle: .arcGISImageryStandard)
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           return scene
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       }()
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       var body: some View {
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           SceneView(scene: scene)
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       }
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   }
   More info

   Note that Scene is prefixed with ArcGIS in order to provide clarity from the Scene protocol.

4. In the Project Navigator, click MainApp.swift.

Configure the scene

Scenes contain many properties that can be adjusted. Define a Surface on which layers are draped and center the scene on the Santa Monica Mountains.

1. In the Project Navigator, click ContentView.swift.

2. In the editor, create an ArcGISTiledElevationSource and add it to a new Surface.

   More info

   An elevation source can define a surface with 3D terrain in a scene. Without an elevation source, the default globe surface is used to display the scene.

   ContentView.swift

   19 collapsed lines
   1
   // Copyright 2023 Esri
   2
   //
   3
   // Licensed under the Apache License, Version 2.0 (the "License");
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   // you may not use this file except in compliance with the License.
   5
   // You may obtain a copy of the License at
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   //
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   //   https://www.apache.org/licenses/LICENSE-2.0
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   //
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   // Unless required by applicable law or agreed to in writing, software
   10
   // distributed under the License is distributed on an "AS IS" BASIS,
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   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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   // See the License for the specific language governing permissions and
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   // limitations under the License.
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   import SwiftUI
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   import ArcGIS
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   struct ContentView: View {
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       @State private var scene: ArcGIS.Scene = {
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           let scene = Scene(basemapStyle: .arcGISImageryStandard)
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           // Create an elevation source to show relief in the scene.
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           let worldElevationServiceURL = URL(string: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")!
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           let elevationSource = ArcGISTiledElevationSource(url: worldElevationServiceURL)
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           // Create a Surface with the elevation data.
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           let surface = Surface()
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           surface.addElevationSource(elevationSource)
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           // Add an exaggeration factor to increase the 3D effect of the elevation.
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           surface.elevationExaggeration = 2.5
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           // Apply the surface to the scene.
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           scene.baseSurface = surface
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           return scene
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       }()
   8 collapsed lines
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       var body: some View {
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           SceneView(scene: scene)
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       }
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   }

3. Set the initial viewpoint of the scene using a Point and a Camera.

   More info

   The position from which you view the scene is defined by a Camera. The following properties of the camera A camera defines the rendering viewpoint of a 3D scene in a scene view. Learn more are used to define an observation point in the scene:

   • 3D location: Latitude, longitude, and altitude
   • Heading: Azimuth of the camera’s direction
   • Pitch: Up and down angle
   • Roll: Side-to-side angle
   ContentView.swift

   19 collapsed lines
   1
   // Copyright 2023 Esri
   2
   //
   3
   // Licensed under the Apache License, Version 2.0 (the "License");
   4
   // you may not use this file except in compliance with the License.
   5
   // You may obtain a copy of the License at
   6
   //
   7
   //   https://www.apache.org/licenses/LICENSE-2.0
   8
   //
   9
   // Unless required by applicable law or agreed to in writing, software
   10
   // distributed under the License is distributed on an "AS IS" BASIS,
   11
   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   12
   // See the License for the specific language governing permissions and
   13
   // limitations under the License.
   14
   
   15
   
   16
   import SwiftUI
   17
   
   18
   import ArcGIS
   19
   
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   struct ContentView: View {
   21
   
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       @State private var scene: ArcGIS.Scene = {
   23
           let scene = Scene(basemapStyle: .arcGISImageryStandard)
   24
   
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           // Create an elevation source to show relief in the scene.
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           let worldElevationServiceURL = URL(string: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")!
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           let elevationSource = ArcGISTiledElevationSource(url: worldElevationServiceURL)
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           // Create a Surface with the elevation data.
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           let surface = Surface()
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           surface.addElevationSource(elevationSource)
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           // Add an exaggeration factor to increase the 3D effect of the elevation.
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           surface.elevationExaggeration = 2.5
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           // Apply the surface to the scene.
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           scene.baseSurface = surface
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           // Create a point that defines the observer's (camera) initial location in the scene.
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           // The point defines a longitude, latitude, and altitude of the initial camera location.
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           let point = Point(x: -118.804, y: 34.027, z: 5330.0, spatialReference: .wgs84)
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           // Create a Camera uing the point, the direction the camera should face (heading), and its pitch and roll (rotation and tilt).
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           let camera = Camera(location: point, heading: 355.0, pitch: 72.0, roll: 0)
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           // Set an initial viewpoint for the scene using the camera and observation point.
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           scene.initialViewpoint = Viewpoint(boundingGeometry: point, camera: camera)
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           return scene
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       }()
   8 collapsed lines
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       var body: some View {
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           SceneView(scene: scene)
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       }
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   }

Add a scene view to the UI

A scene view A scene view is a user interface that displays scene layers and graphics in 3D. It uses a camera to control the visible area of the scene and supports user interactions such as pan, zoom, tilt, and rotate. Learn more is a UI component that displays a scene A scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data. Learn more and handles user interactions, including navigating with touch gestures. Add a scene view to the project UI and display the scene that is defined by the Model class.

1. To the body, add a SceneView initialized with scene. This will create a SceneView with the newly created scene.

   ContentView.swift

   51 collapsed lines
   1
   // Copyright 2023 Esri
   2
   //
   3
   // Licensed under the Apache License, Version 2.0 (the "License");
   4
   // you may not use this file except in compliance with the License.
   5
   // You may obtain a copy of the License at
   6
   //
   7
   //   https://www.apache.org/licenses/LICENSE-2.0
   8
   //
   9
   // Unless required by applicable law or agreed to in writing, software
   10
   // distributed under the License is distributed on an "AS IS" BASIS,
   11
   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   12
   // See the License for the specific language governing permissions and
   13
   // limitations under the License.
   14
   
   15
   
   16
   import SwiftUI
   17
   
   18
   import ArcGIS
   19
   
   20
   struct ContentView: View {
   21
   
   22
       @State private var scene: ArcGIS.Scene = {
   23
           let scene = Scene(basemapStyle: .arcGISImageryStandard)
   24
   
   25
           // Create an elevation source to show relief in the scene.
   26
           let worldElevationServiceURL = URL(string: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")!
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           let elevationSource = ArcGISTiledElevationSource(url: worldElevationServiceURL)
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           // Create a Surface with the elevation data.
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           let surface = Surface()
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           surface.addElevationSource(elevationSource)
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           // Add an exaggeration factor to increase the 3D effect of the elevation.
   34
           surface.elevationExaggeration = 2.5
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           // Apply the surface to the scene.
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           scene.baseSurface = surface
   38
   
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           // Create a point that defines the observer's (camera) initial location in the scene.
   40
           // The point defines a longitude, latitude, and altitude of the initial camera location.
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           let point = Point(x: -118.804, y: 34.027, z: 5330.0, spatialReference: .wgs84)
   42
   
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           // Create a Camera uing the point, the direction the camera should face (heading), and its pitch and roll (rotation and tilt).
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           let camera = Camera(location: point, heading: 355.0, pitch: 72.0, roll: 0)
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           // Set an initial viewpoint for the scene using the camera and observation point.
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           scene.initialViewpoint = Viewpoint(boundingGeometry: point, camera: camera)
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           return scene
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       }()
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       var body: some View {
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           SceneView(scene: scene)
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       }
   2 collapsed lines
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   }

Run the solution

Press Command + R to run the app.

You should see a scene A scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data. Learn more with the imagery basemap layer A basemap layer is the layer in a map or scene that displays basemap data. The data source for a basemap layer is typically a basemap service. Learn more centered on the Santa Monica Mountains in California. Drag, pinch, and rotate on the scene view to explore the scene.

Option 2: Download the solution

1. Click the Download solution link under Solution and unzip the file to a location on your machine.

2. Open the .xcodeproj file in Xcode.

Since the downloaded solution does not contain authentication credentials, you must add the developer credentials that you created in the Set up authentication section.

Set developer credentials in the solution

To allow your app users to access ArcGIS location services ArcGIS Location Services, also referred to as Location Services, are services hosted by Esri that provide geospatial functionality for developing mapping applications. They include the ArcGIS Basemap Styles service, ArcGIS Static Basemap Tiles service, ArcGIS Places service, ArcGIS Geocoding service, ArcGIS Routing service, ArcGIS GeoEnrichment service, and ArcGIS Elevation service. An ArcGIS Location Platform or ArcGIS Online account is required to use the services. Learn more , use the developer credentials that you created in the Set up authentication step to authenticate requests for resources.

Run the solution

Press Command + R to run the app.

You should see a scene A scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data. Learn more with the imagery basemap layer A basemap layer is the layer in a map or scene that displays basemap data. The data source for a basemap layer is typically a basemap service. Learn more centered on the Santa Monica Mountains in California. Drag, pinch, and rotate on the scene view to explore the scene.